Perforating machine



W. F. LAUTENSCHLAGER.

PERFORATING MACHINE.

APPLICATION FILED NOV-3,1921.

Patented 0015.31, 1922..

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Patented 001; 31, 19122..

W. F. LAUTENSCHLAGER.

PERFORMING-MACHINE. 4 APPLICATION FILED NOV- 3,192].

I Patented Oct. 31,1922.

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PERFORATIIJG MACHINE.

APPLICATION FILED NOV. 3,192].

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PERFORMING MACHINE. I APPLICATION FILED NOV- 3.192!- 1,434,060 v 31,

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PERFORATING MACHINE.

APPLICATION FILED NOV. 3, I92].

Patented 00t31,1922.

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I7? 0077 hi siding at Cincinnati, in

Patented @ct. El, 1922.

; WILLIAM F.

1,434,060 PATENT OFFICE.

LAUTENSCHLAGEB, OF CINCINNATI, OHIO, ASSIGNOR TO THE PEERLESS MACHINERYCOMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OF MASSA- CHUSETTS.

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Application filed November 3, 1921. Serial No. 512,609.

1 '0 all whom it may concern:

Be it known that I, VILLIAM F. .LAUTEN- SCHLAGER, a citizen of theUnited States, rethe county of Hamilton and State of Ohio, have inventeda new and useful Improvement in Perforating Ma- 'chines, of which thefollowing is a specification, reference being had therein to theaccompanying drawings.

This invention relates to perforating machines and more'particularly toa machine of that class in which a die carrying plunger is employed forperforating a complete pattern or design upon each operation.

Heretofore, most of the machines of the above character have been opento a serious objection, able, at any time, to have an unobstructed viewof the work-support. This has been due to the fact that in thesemachines the plunger moves vertically through a very rations on the shoepart.

short stroke and even when in a raised position, the plunger is so closeto the worksupport that the latter cannot be seen by the operator. Inthe use of such machines the operator is obliged to place the work uponthe work-support and in engagement with the gauge through the sense oftouch alone, in consequence of whichit to secure the proper placing ofthe perforequently, because of this inability to see the work-support,the perforated design is misplaced, rendering the shoe parts worthlessand involving a serious loss of time and material. At the same time, theinability of the opera-v tor to seethe work and the desire to preventmistakes, has the effect of slowing down the perforating operation ofthe machines of this character, thereby increasing the cost ofoperation.

The main object of my invention 15 the provision of a perforatingmachine employing a die carrying plunger in which the work can be seenby the operator when placed in position upon the work-support, and Iaccomplish this end by having the plunger pivotally mounted and meansfor operating the plunger so arranged that not only is the length of thestroke of the plunger increased but the forward s1de of the plunger isturned upwardly at an angle to the work-support in order to permitanamely, that the operator is un-' is difficult Another object of theinvention is the prov sion of a machine which is simple and efficientboth in construction and operation and which may be operated withcomparative rapidity.

A further object is the provision of a machine in which clear anddistinct perforating may be obtained even though the perforatmg edges ofand to accomplish this result I provide means whereby a heavy pressureis exerted in a downward direction u on the plunger at the end of itsdownwar stroke. I

An additional object of the invention is the provision of a machinecapable of being used for all kinds of pattern perforating. and to thisend I provide dies so mounted the die may be slightly dull,

the plunger in order to'enlarge the scope of the work done by themachine.

Another object is the provision of means carrying the work-support soconstructed as to be capable of accurate adjustment and which requiresno further adjustment after the initial one.

Other objects of the invention will be more specifically set forth anddescribed hereinafter.

Une of the important features of my invention consists in so mountingthe die carrying plunger that a clear and unobstructed View of thework-plate is afforded the operator when the lunger is in its normalraised position. fireferably li accomplish this resultby pivotallymounting the plunger on a centre which is in the rear of thework-support and away from the operator, but in the same plane as theupper face of the work-support. plunger around its pivot line therebytilts the forward edge of the plunger upwardly, thereby exposing theentire work-supp0rt to the view of the operator. this constructionpermits the plunger to be given a longer stroke. The'advantages of thisfeature are important; it insures abso lute correctness 'in thepositioning of the work upon the work-support and against the gauge,thereby preventing the damage now common in machines where the operatoris unable 'to see the work and also increases the speed at which theoperator can adjust the work in position and operate the machine.

Another important feature of my invention resides in the means providedfor giv- At the same time,

lift

ing the final pressure to the plunger to ac: complish the perforatingoperation. The use of a pivotally mounted die carrying plunger makes itdifficult, as a mechanical proposition, to exert sufficient finalpressure upon the plunger without constructing the means for operatingthe plunger of extreme size. This is'especially' true where themovecutting of the perforations even although the dies'may be somewhatdull,- and the fine adjustment enables the dies to be used for a longperiod without excessive wear.

Yet another important feature of my invention resides in. the provisionof a tube die and a work-support of such form as to be capable ofreversal in the machine in order to extend the scope of the work handledby the machine. In the use of a ma chine of this character in the shoeindustry, it is necessary in perforating shoe tips to place the work inthe'machine with the toe portion of the tip toward the operator and inperforating vamps with what is termed imitation tip perforating, becauseno shoe tip is used on the, shoe, the vamp is placed in the machine withthe toe portion away frpm the operator. Heretofore, in order to takecare of these two kinds of work, it has been necessary to provide eithertwo machines or'two dies. In some cases it has been possible to do bothof these kinds of work on a single machine, yet that has re quired theuse of two tube dies which involves a very large expense because tubedies for this purpose are extremely expensive.

In my machine, however, I am enabled to use one die for doing bothkindsof work by merely reversing the die and work-support in the machinewithout requiring any other adjustment. My method of doing this requiresa few additional gauges only, but

as thesegauges are of simple construction,

it involves a comparatively small expense.

In the drawings illustrating one embodiment of my invention, Figure 1 isa front elevation of a machine constructed and adapted to be operated inaccordance there with, showing the plunger. in perforatingv position atthe end'of its downward stroke; Fig. 2 is a vertical sectional view online E-E in Big. 1; )Fig. 3 is a vertical. sectional view on line F-F inFig. 1, but showing the plunger in a raised position; Fig. 4

I is a diagrammatic view of the eccentrics on the main shaft foroperating'the toggle joints in the position shown in Fig. 3; Figs. 5 and6 are similar views of the eccentrics at the upper'and lower endsrespectively of the toggle-joints in the positions shown in Fig. 3; Fig..7 is a side elevation of the machine partly in section on line G Gin Fig. 1; Fig. 8 is avertical sectional View on line DD. in Fig. 2;Fig. 9 is a cross sectional view on line 3-13 in Fig. 2; Fig. 10 is across-sectional view on line CC in Fig. 2; F ig..11 is a diagrammaticview showing in dash lines the positions of the various parts of themachinedn its normal position of rest with the plunger raised and infull lines the positions of the various parts'when the plunger is inoperative that is, perforating position; F i 12 is a plan view of theworksupport on line A-A in Fig. 2 showing a shoe vamp in position toreceive imitation perforating; Fig. 13 is a similar view of thework-support showing a shoe'tip in position to be perforated, thediebeing reversed;

and Fig. 14 is a sectional view on line 14-14 in Figure 12.

In the drawings illustrating the preferred embodiment of my invention,there is shown a frame-which may be of any suitable form, but preferablycomprises a base 20, two sides 21 and a back 22 curving upwardly andtoward the front which is open with the exception of a front plate 23extending a short'distance upwardly from the base 20. The frame is ofsubstantial construction adapted to'withstand the operation of themachine and may be strengthened by rounded projecting ribs 24 on thesides 21, and a depending cross rib or flange 25 at the top. Openings 26may be provided in theside plates to permit access to adjusting screwsand an opening 27- in the back 22 is required for the main shafteccentrics.

For supporting the work in the machine, a work-support 30 is mounted ona bed-- plate 31, which is provided with ends 32 adapted to rest onflanges 33 formed on the inner faces of the sides 21 of the frame. The

engaging faces ofthe ends 32 and flan'ges 33 are cut-on a circle wherebythe bed-plate may be turned laterally in one direction or the other uponsaid flanges as bearings in order to. secure proper lateral adjustment,and for this purpose fheaded adjusting screws 34 are threaded into thefront portion' of the bed-plate. The heads of the screws 34 engage thetop of the front plate or web 23 of the frame, and by turning the screwsin one direction or the other, the front side of the bed-plate may beraised or lowered as desired. The rear side 35 of the bed-plate isturned downwardly and provided with a face 36 adapted to engage screws37 threaded through a flange '38 formed on an upright web39'constituting a part of the frame. The screws 37 may be secured inadjusted position by lock- *washers 40 and preferably the adjusting and9), all being preferably integral,

of the bed-plate-is doneby the manipulation of the screws 37 alone. Toincrease the strength of the bed-plate which is subjected toconsiderable pressure during the perforating operation, it may berovided with a central flange 41 and a fimaller parallel flange 42 onits front side. The front plate or web 23 of'the frame is cut away on acurved line at 43 to correspond to the flange For holding thework-support upon the bed-plate, the latter may be provided with twoupwardly projecting dowels 45 and the former with two holes to receivethe said dowels. A thin strip 46 of soft brass or other suitablematerial may be inset in the top surface of the work-support 30 to receive the perforating edges of the tube die to avoid injury thereto,and, if "desired, the edge of the recess may be undercut and thelongitudinal edges of the strip 46 may be bevelled to hold the latterwithin the former.

Between the work-support and the bedplate a thin sheet of resilientmaterial 47, such, for instance, as sheet rubber, may be interposed fortaking up the final shock of the impact of the die upon thework-support. I have found that the use of such means diminishes theshock on the die and thereby greatly increases its life without at alllessening its perforating action. In fact. the interposition of aresilient material between the work-support and bed-plate permits ofsuch adjustment of the movement of the die-carrying plunger that sharpand clean perforations are assured without noticeable wear upon thecutting edges of the die.

Pivot-ally mounted within the frame is a die-carrying plunger comprisinga plungerhead 50 carried by two arms 51 connected together by across-piece 52, (see Figs. 2 Each arm 51 is pivotally mounted at itsrear end upon a headed shaft 53 in a bearing 54 formed in one side 21 ofthe frame and held therein by the head of the shaft on the inner sideand by a washer 55 and a screw 56 threadedinto the end of the shaft onthe outer side. The shafts 53 are so located that their centers lie inthe same plane as the top surface of the work-support 30. The lower face58 of the plunger head 50 is finished smooth to form an abutment surfacefor the perforating die and this face lies in a plane parallel to theplane of the work-support when the plunger is in a lowermost position.

The die comprises a plate 60 provided with a plurality of tube dies6l-ofordinary constructiomset in the plate and arranged in a design andto permit the material cut out by the tube dies to pass up through thedies and the plate 60 and then to escape, the latter is provided with aseries of lugs 62 adapted to engage the face 58 of the plunger head whenthe die is arranged in position and to hold the plate away from theplunger head. Any suitable means ma be provided for holding the die inposition on the plunger head and one such means is shown comprising twoears 63, one on each end of the plunger head; each ear being adapted tobe forced toward the end of 'the'plunger head by a butterfly headedscrew 64 threaded therethrough and into said end in order to contract adowel hole 65 at the base of the ear to grip a dowel 66 formed on theback face of the die-plate 60. By the manipulation of the two screws 64,the die may be mounted on or removed from the plunger head withoutappreciable effect and in an inappreciable period of time.

For lowering and raising the plunger, I provide two toggle jointsadapted to be straightened and broken by the operation of the main shaftof the machine. Each toggle joint is made up of a lower arm 68 and anupper-arm 69, pivotally connected together by a shaft 70; the upper endof the lower arm 68 being preferably bifurcated to receive the lower endof the upper arm 69, and thereby prevent lateral motion during theoperation of the machine. The two lower arms 68 at their lower ends aresuitably formed to each receive one end 72 of a shaft 73 which isrotatably mounted in the upper part of the plunger head 50 and the upperarms 69 are similarly formed at their upper ends to each receive one end74 of a shaft 75 rotatably mounted in two suitable bearings 7 6 integralwith the frame of the machine. (See Fig. 8.) The arms 68 and 69 may belocked on their respective shafts T3 and 75 by any suitable means suchas a washer 77 and screw 78 threaded into the end of the shaft in eachcase. The arms 68 and 69 may be re-enforced by webs 79.

The toggle the main sha t 80 by any suitable means and one such is shownin the drawings consisting of two pitmen 81 each mounted on an eccentric82 on the main shaft 80 and having its other end in the form of a splitcollar 83 adapted to encircle the inner end of one of the shafts 70. thejunction of a toggle joint. The main shaft 80 is rotatably mounted insuitable bearings 84', each formed on the inner face of one of the sides21 of the frame, and one end of said shaft extends beyond the frame andmay be connected to any suitable source of power by a clutch not shown.Each perforating operation of the machine requires one completerevolution of the main shaft and consequently any form of clutch whichpermits an intermittent operation of this character may be used. Such aform of clutch is shown in a copending application for perforatingmachine filed by me in the United States Patent Office on October 18,1921, Serial No. 508,493, to which reference may be made for a morecomplete description of its construction and operation. This clutchthere shown is adapted to be operated bya foot treadle and in thisapplication the frame is shown provided with a lug 86 having a hole 87to receive a rod connection between the clutch and treadle.

Preferably the two eccentrics 82, together with a third eccentric 88,arranged midway, are formed in one piece, as shownin Figure 9, and boredto receive the mainshaft By making these three eccentr cs in oneintegral piece and keying this piece upon the main shaft by means ofkeys 90 adapted to be inserted in keyholes 91 and through-the shaft, alladjustments of the eccentrics in relation to each other are avoided andthe true relation between them is always maintained. -Each pitman 81 maybe provided with an integral split strap 92, the ends of the strap beingprovided with lugs 93 threaded to receive a bolt 94 and nut 95 wherebythe strap may be drawn into tight engagement with the eccentric as shownin Figure 3. The strap 92 is in each case of slightly less circumferenceon its inside face than the circumference of the eccentric which resultsin a gap between the two ends 93 of the strap, thereby permitting thestrap to be tightened up to take up any wear. The pitman 81 may bere-enforced with longitudinal ribs 96.

As stated heretofore, the eccentrics 82 are are employed merely forstraightening and breaking the toggle joints in order to lower and raisethe plunger and are not of sufficient size to exert a perforatingpressure upon the head of the plunger. In order to accomplish the finaldownward movement of the plunger head with force suflicient toperforate, I provide means for forcing both toggle joints as a unit in adownward direction during the downward movement of the plunger. Thisresult may be accomplished bv various means, one of which is thefollowiiig. The two ends'"74 of the shaft 7 5 are eccentric to the mainbody 75 of the shaft, so that the rotation of the shaft 75 raises andlowers the upper ends of the arms 69,

thereby raising and lowering the togglejoints. To control this movementfrom the main shaft, the eccentric 88 is arranged on the main shaft, asheretofore explained, between the two eccentrics 82 and upon theeccentric 88 is mounted a pitinan 100 having its free end in the form ofa yoke 101 connected by a pin 102 to a split'collar 103 fastened by ascrew 104; said split collar being carried by a short arm 105 mounted onthe shaft 75 between the bearings 76 and secured to said shaft by a key106. The pit- Inan 100 is held upon the eccentric by means of a splitstrap 108, this strap being split on both sides and each portion of thestrap being provided with lugs 110 on its two ends; said lugs beingprovided with threaded holes to receive bolts 112 and nuts 113 wherebythe two portions of the strap may be fastened together around theeccentric 88.

The loose portion of said strap is of such dimensions that whentightened on one side there remains a slight gap 114 on the other sideto permit of the two portions of the strap being drawn together at thatpoint to take up wear.

It is essential that the eccentric 88 be so positioned on the main shaft80 in relation to the eccentric 82 that the arm 105 reaches the end ofits movement to the right, referring to Fig. 2, at approximately thesame time that the toggle joints reach the end of their movement to theleft. At this point, illustrated in Fig. 2, the centers of the shaft102, the main shaft 80 and the eccentric 88 lie in one straight line andthe centers of the shaft 70, that is, the junction point of the togglejoints, the main shaft 80 and the eccentrics 82 all lie in anotherstraight line. These two lines determine the relative location on themain shaft of the eccentrics 88 and 82, and since the arm 105 is shorterthan the upper arms 69 of the toggle joints, and is eccentricallymounted with respect to the upper mounting of said arms 69, the twolines are at an angle to each other.

In order to secure a fine adjustment of the die with respect to thework-support at the time of perforating, means may be provided foradjusting the plunger head in relation to the toggle joints. The ends 72of the shaft 73 upon which the lower ends of the lower arms 68 aremounted are arranged eccentrically with respect to the main body 73 ofthe shaft so that by turning the shaft 73 the plunger head may be movedwithin certain limits upwardly and downwardly in relation to the togglejoints. For this purpose acollar 120 may be secured by a pm 121 to theshaft 73 between the bearings 122 in the plunger head 50 and is providedwith an arm 123 carrying a lug 124 provided with a chamber 125 withinwhich is mounted a pin 126; the pin being maintained in an outwardposition bya spring 127. One of bearings 122 may be provided with aquadrant 128 adjacent to the lug 124 and may be provided with a seriesof holes 129 arranged in a quarter circle and adapted to be engagedbysaid pin 126 so that the shaft 73 may be rotated through a quartercircle to raise or lower the plunger head in relation to the togglejoints by pulling out the pin, then making the adjustments and allowingthe pin to engage one of the holes in its adjusted position. This, itwill be observed, permits the head of the plunger to be finely adjustedin relation to the toggle joints, and thereby to secure a finalperforating adjustment which will insure proper work without injuringthe cutting edges of the die.

In Figures 12 and 13 of the drawings is shown two positions of thework-support 30 illustrating the method of reversing the die 60 and thework-support in .the machine for the purpose of doing different kinds ofwork. In Figure 12 the work-support is shown in position for imitationperforating on a vamp in which the vamp is presented to the machine toeend foremost. This requires the use of a simple gauge 130 mount ed onpins 131 adapted to engage corresponding holes 132 in the work-support.(See Fig. 14.) As the toe portion of the vamp 133 is inserted under thegauge, the latter is provided with washers'13 l mounted on the pinsunder the gauge for the purpose of raising it from the top surface ofthe worksupport in order to permit the toe portion of the vamp to beinserted between the gauge and work-support. It is customary in thiswork to mark the vamp 133 with pin points 135 and when the vamp isinserted in the machine these pin points are aligned against the lines137 on the gauge. Figure 13 is illustrated the method of using themachine for perforating tips 139. In

this case the die and work-support are reversed from the position shownin Fig. 12, and a gauge 140 of different form is provided with pins 142adapted to engage similar holes in the work-support. Additional holes144 may be provided in order to move the gauge further away from the diewhere a wider margin between the perforations and the edge of the tip139 is' desired. The tip is presented to the machine by holding its edge145 in engagement with the gauge 140 which rests upon the top surface ofthe work-support. It will be noticed that the dowel holes in thework-support are centered on a line 150 which just engages one side ofthe design so that the design in its entirety is located on one side orthe other of this straight line. The dowels 62. in the, die arepositioned in the same manner. By arranging all designs in engagementwith said line ll am enabled to locate the holes for receiving thegauges absolutely so that both the die and work-support may be reversedin the machine to suit the variouskinds of work without requiringanything further than a change in gauges.

The operation of my machine is as follows: The normal position of'themachine is shown in Fig. 3 with the plunger in raised position. Theoperator sits in front of the machine where she has a full and completeview of the work-support, and places the work-upon the said support" insuitable relation tothe gauge. She then depresses the tree 'lle,throwing in the clutch and the main the junction point shaft starts torevolve. The revolution of the main shaft turns the eccentrics 82advancing the pitman 81 toward the front of the machine andstraightening the toggle joints, which moves the plunger pivotallydownwardly. At the same time the eccentrio 88 moves the pitrnan 100 fromfront to rear, thereby gradually lowering the suspension point of thetoggle joints and forcing them downwardly to move the plunger in thesame direction. In Fig. 11, showing the operation of the machinediagrammatically, the dotted lines indicate the positions of the variousparts while the machine is in a normal state of rest andwbefore thepower has been applied, and the solid lines indicate the final positionof the parts at'the completion of the perforating operation. At thislatter point it will be observed that the eccentrics 82 are "at theextreme of their forward movement and that the center of the joint ofthetoggle joints'ha's passed beyond a straight line joining the centers ofthe ends 72 and raises the suspension point of said joints and the"machine returns to its noimalposition after one complete revolution ofthe main shaft. The operator may operate the machine continuously bykeeping the treadle depressed, or may operate the machine in a.step-by-step manner, each step being one complete revolution of the mainshaft, by merely depressing the-treadle and then re-' leasingit beforethe shaft has completed at revolution.

It will be noticed that at the extreme end of their forward movement thejunction points of the toggle-joints pass beyond a straight lineconnecting the two centers 'of the two ends of each toggle-joint, thisbeing shown in detail in Fig. 11. This result'is due to 'the'fact thatthe two arcs of movement of the upper end of the lower arm and the lowerend of the upper arm of each toggle-joint while in theory touching atonly one point, in practice coincide for an appreciable distance withoutefi'ecting the hei ht of the plunger in a vertical direction. heperforating pressure of the tube die is therefore exerted upon thematerial and the worksupport throughout an arc'of movement of of thetoggle-joints of a number of degrees, thereby contributing to a cleancutting action ofthe tube the. By making the work-support'resilient, thepressure of the tube dies upon the work-support in excess of theperforating pressure is taken up by the resiliency of the work-supportwithout injuring the cutting edges of the e. In order to change themachine from tips.

the work-support.

what, up to the present time, has generally required two machines, ortwo dies if one machine is used. It is to be understood that myinvention may be embodied in other forms of'oonstruction than thatherein shown and described, and my invention is not to be limited to anyspecific form of construction.

What I claim is 1. A perforating machine having, in combination, awork-support, a plunger pivotally mounted on a fixed axis, a tube diecarried by said plunger, a pairof toggle joint-s connected to saidplunger and means for operatin said toggle joints to lower and raisesaid p unger to perforate the material upon 2. In a perforating machine,the combination of a pivotally mounted, die-carrying plunger, adapted tomove in the arc of a circle and normally held in a raised positionpermitting a full view of-the work, and tog-- said gle-jointed means foroperating plunger.

3. na perforating machine, the combination'of .a work-support, adie-carrying plunger pivotally mounted at its rear end,

' adapted to move in the are of a circle and means to perforate normallyin a raised position, permitting a full view .of the work on saidsupport, perforating means carried by said plunger, and

toggle-jointed means for operating saidv plunger .to. perforatethematerial upon said work-support.

4:. A perforating machinehaving, in combination, a work-support, a die,dieah'olding means, said means'being normally in a raised. 'POSltIOIIpermitting the operator to have a full view of the work upon saidwork-support, means for operating said die-holding the work andmeans forlowering-said operating means;- in order to impart the final perforatingpressure.

'5. A perforating machine having, in-com bination, a work-support, adie, die-holding means, said means being normally in a raised positionpermitting the'operator to have a" full view of the work upon saidwork-support toggle-jointed means for opperforating pressure, 6. Aperforating machine having, in com 'er-atingisaid die-holding meansto-perforate the work and means for lowering said-operating means inorder to impart the final bination, a work-support, a die, dieholdingmeans pivotally mounted on a fixed axis, said means being nor- -mally ina raised position permittingthe carried by said plunger, a pair oftoggle joints for supporting the free end of said plunger, means forstraightening and break- 3 ing said joints to lower and raise saidplum-- ger and means for forcing said toggle oints downwardly during thestraightening movement thereof in order to secure a heavy pressure attheconclusion of the perforating 8 operation. v

8. A perforating machine having, in combination, a work-support, aplunger pivota'lly mounted and normally in a raised position permittinga full view of the workupon -9 said work-support, a perforating 'diecarried by said plunger, a pair of toggle joints connected at the lowerends to said plunger and having their uppenends eccentrieally mounted ona rook-shaft, means for operat- 9 ing said toggle joints to lower andraise said plunger and means for rocking said rock-shaft to lower saidtoggle joints during the downward movement of the plunger.

' 9. A perforating machine having, in com-1 bination, a work-support, aplunger, a perforatin die carried by said plunger, a pair of toge jointsfor lowering and raising said plunger and means for lowering said togglejoints during the downward move- 1 ment of the plunger in order. toincrease the length of its-downward stroke.

10. A perforating machine having, in combination, a work-support,aplunger, a perforating die carried by said plunger, a 1 rock-shaft, apair of toggle joints connected at their upper ends to said rock-shaftand at their lower ends to said plunger means for straightening andbreaking said toggle joints to lower and raise said plunger and .1 meansfor turning said rock-shaft "to drop said toggle joints to increase thelength of the downward stroke of said plunger.

11. A perforating machine having, in combination, a work-support, aplunger, a 1 perforating die carried by said plung r, a rock-shaft, apair of toggle joints conrrcted at their upper ends eccentrically tosaid rock-shaft and at their lower ends to said plunger, means forstraightening and break- 1 ing said toggle joints to lower and raisesaid plunger and means for rocking said rock-shaft in order to lowersaid to gle joints during the downward movement 0 the plunger. 1

12. A perforating machine having, in combination, a work-support, apivoted plunger, a perforating die carried by said plunger, a pair oftoggle joints for lowering and raising said plunger, the lower ends ofsaid toggle joints being eccentrically connected to said plunger topermit of relative adjustment of said plunger inrelation to said togglejoints and means for operating said toggle joints to lower and raisesaid plunger.

13. A perforating machine having, in combination, a -work-support, apivoted plunger, a perforating die carried by said plunger, a pair oftoggle joints for lowering and raising said plunger, the lower ends ofsaid toggle joints being connected eccentrically to said plunger topermit of adjustment of the plunger in relation to the toggle joints,means for locking said plunger in its adjusted position With relation tosaid toggle joints and means for operating said toggle joints to lowerand raise said plunger.

14. A perforating machine having, in combination, a work-support, aplunger pivotally mounted, a perforating d'ie carried by said plunger, arock-shaft, a pair of toggle joints connected eccentrically-at theirupper ends to said rock-shaft and eccentrically at their lower ends tosaid plunger,

means for straightening and breaking said toggle joints to lower andraise said lunger and means for rocking said rock-s aft to lower saidtoggle joints during the downward movement of said plunger in order tolengthen the effective stroke of said plunger and to exert a perforatingpressure thereon.

15. A perforating machine having, in combination, a work-support, a mainshaft, a plunger pivoted on a fixed axis, a perforating die carried bysaid plunger, a pair of toggle joints for operating said plunger,eccentric means mounted on said main shaft for straightening. andbreaking said toggle joints to lower and raise said plunger.

16. A perforating machine having, in combination, 'a main shaft, awork-support, a pivoted plunger, a perforating die carried by saidplunger, a rock-shaft,, a pair of toggle joints connected eccentricallyat their.

upper ends to said rock-shaft and at their lower ends to said plunger,means mounted eccentrically on said main shaft for operating said togglejoints to lower and raise said plunger and means mounted eccentricallyon said main shaft for rocking said rock-s aft to lower said togglejoints during the downward movement of said plunger in order to extendthe length of the effective stroke of the plunger and to exert thepressure necessary for the perforating operation.

17 In a perforating machine, the combination with a work-support and aper-- forating member of toggle-jointed means for operating saidperforating member, and rotatable means for adjusting the relationbetween said member and said means.

18. In a perforating machine, the combination with a work-support, and aperforating member of toggle-jointed means for operating saidperforating member and means for adjusting the relation between saidmember and said toggle-jointed means; said means comprising a shaftrotatably mounted in said perforating member, said shaft havingeccentric ends adapted to receive said toggle-jointed means, and meansfor turning said shaft in either direction.

19. In a perforating machine, the combination with a work-support, apivoted plunger and means for operating the said plunger of aperforating tube die provided with two dowels adapted to fit and to besecured in suitable holes in the plunger; the tubes on said die beingall located on one side of a straight line drawn through the centers ofsaid two dowels in order that the said die may be reversibly mounted onthe plunger when desired.

205 In a perforating machine, the combination with a 'work-support, apivoted plunger and means for operating the said plunger of aperforating tube die-provided with two dowels adapted to fit and to besecured in suitable holes in the plunger; the tubes on said die beingarranged to perforate a design which abuts a straight line drawn throughthe centers of said two dowels and lies entirely on one side of saidline in order that the said die may be reversibly mounted on saidplunger.

' 21. In a perforating machine, the combination with a work-support, aplunger and means for operating the said plunger of a perforating tubedie provided with two dow els adapted to fit and to be secured insuitable holes in the plunger; the tubes on said die being all locatedon one side of a straight line drawn through the centers of said two 1wdowels in order that the said die may be reversibly mounted on theplunger when desired.

22. In a perforating machine, the combination with a work-support and aperforating member of toggle-jointed means for operating saidperforating member and means operating in a downward direction for.vapplying the final perforating pressure on said perforating member. 1

23. In a perforating machine, the combination with a work-support and aperforating member of toggle-jointed means for operating saidperforating member and rotatable means for adjusting the relation 125between said perforating member and said toggle-jointed means.

- 24. In a perforating machine, the coinbination with a work-support anda perforating member pivotally mounted of W not means for operating saidperforating member, said means being adjustable in relation and havingeccentric ends, a pair of toggle joints mounted at their upper ends onsaid eccentric ends of said rock-shaft .and at their lower endsconnected to said die-carryi-ng member, means for operating saidtoggle-joints to lower and raise said member, and means for turning saidrock-shaft to lower said toggle joints at the end of the downward strokeof said member.

27. In a perforating machine, the com;

bination of a frame, a work-support, a die carrying member pivotallymounted and normally in a raised position, a rotatable member mounted inthe upper part of said frame, a pair of toggle joints eccentricallymounted at their up er end on said rotatable member and at them lowerends adjustably secured to said" die-carrying member, means for operatinsaid toggle joints to lower and raise said die-carrying member, andmeans for turning said rotatable member to lower said toggle jointsduring their downward movement.

28. In a perforating machine, bination of a frame, a work-support, adiec'arrying member normally in a raised position, a rotatable member inthe top of said frame, toggle-jointed means eccentricallv mounted at itsupper end on said rotatable member and adjustably secured at its lowerend to said member, means for operating said toggle-jointed means, andmeans for turning said rotatable member to change the position ofsaidtoggle-jointed means.

' 29. A perforating machine having, in combination, amain shaft,adie-carrying member, toggle-jointed means connected to said member,eccentric meansmounted on said main shaft for operating saidtogglejointed means to lower and ralse saidmemher, and means forlowering said togglejointed means during the downward movement of saiddie-carrying member including eccentric means on the said main shaft;sa1d first ment oned eccentric means and said second mentloned'eccentric means belng' so mounted on said mlain shaft as to'balance eachother. 1

30. In 'a perforating machine, the com bination with a pivotally mounteddiecarrying plunger of operating instrumentalithe oomties therefore comrising a pair of' toggle- 7 joints, a main sha and two pitmeneccentrically mounted on said; shaft and each connected to one of saidjoints.

31. In a rforatin machine, the combination wit a pivotally mounteddie-carrying plunger of operating instrumentalities therefor comprisinga main shaft, two eccentrics formed thereon, two toggle-joints, twopitmen, each mounted on one of said eccentrics and connected at its freeend to one of said toggle-joints, whereby said joints are straightenedand broken on the revolution of said shaft.

32. In a perforating machine, the combination of a die-carrylng plungerpivotally mounted on a fixed axis and toggle-jointed means for operatingsaid plunger.

33. In a perforating machine, the combination of a frame, a die-carryingplunger ivotally mounted at two points In said rame, a rock-shaftmounted in suitable bearings in the top.of said frame, a pair of\toggle-joints mounted at their upper ends eocentrically on saidrock-shaft and at their lower ends connected to said plunger, means forrocking said rock-shaft and means for operating said toggle-joints tolower and raise said plun er. I v

34..Ina pe orating machine, the combination of a frame, a bed plate,means-for levelling said bed late, awork-support on said bedplate, adie-carrying plun er pivotally mounted" on a fixed axis, an means, foroperating said plunger.

35. In a perforating machine, the combination of a frame provided withtwo oppo-' site curved flanges, a bedpla'te mounted on said flanges, theends of said bedplate being curved to correspond to the curve of saidflanges, means for adjusting said bedplate on said flanges in atransverse direction, a work-support on said bedplate, a

plunger, and means for operating said 37. In a perforating machine, thecoir} bination of a die-carryingplunger, means for operating saidplunger, and an adjustable connection between said plunger and saidoperating means; said connection com- I prising a rotatable membermounted onsaid plunger and having an eccentric portion-to- ,foroperating said plunger, andLan adjustable connection between saidplunger and said operating means; said connection comprising a shaftrotatably mounted on said 10 plunger and adapted to be having eccentricportions connected to said operating means, and means for turning saidshaft to adjust the relation between said plunger and said operatingmeans.

In Witness whereof, I hereunto set my hand this secon (1 day ofNovember, 1921.

WILLIAM F. LAU'IENSCHLAGER.

